Effects of Bi₂O₃ on the structural, thermal and wetting properties of zinc bismuth phosphate glasses for low-melting sealing glass

Abstract

The study of lead-free low-melting sealing glass with properties such as low glass transition temperature (T g ), low softening temperature (T s ), good wettability on the substrate, is in process. One of the low-sintering lead-free glass compositions, the bismuth glass system is considered to be an alternative to lead oxide glass. Research on the development of lead-free low-melting sealing glass in ZnOP 2 O 5 Bi 2 O 3 (ZPB) system was prepared and the effects of substitution of Bi 2 O 3 for ZnO on the structural, thermal, and wetting properties of a sealing glass were studied. The changes in T g , T s and coefficient of thermal expansion (CTE) may reflect decreasing connectivity of the glass structure, due to the increasing BiO bonds. This structure changes have an effect on wettability on the substrate. The addition of higher amounts of Bi 2 O 3 improved the wettability of the glass on the substrate. The ZPB glass, possessing properties of low T g and good wettability, is suitable for low-to-mid temperature sealing applications.

The Tuning Capability of CuO and Na2CO3 Dopant on Physical Properties for Laser Sealing Using Fiber Types of Sealant

“…The wetting angle of the pellet was The flow button test was performed, in order to investigate flow ability of PSAB glass on substrate. The heat reaction of glass frits was divided into three stages [30,31]. In the first stage, the square shape changed to a trapezoid and then to a square.…”